Properties of the Number 40387

Forty Thousand Three Hundred Eighty-Seven

Basics

Value: 40386 → 40387 → 40388

Parity: odd

Prime: Yes

Previous Prime: 40361

Next Prime: 40423

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 40387

Divisors: 1, 40387

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1001110111000011

Octal: 116703

Duodecimal: 1B457

Hexadecimal: 9dc3

Square: 1631109769

Square Root: 200.9651711118123

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Lonely (or isolated) primes: least prime of distance n from nearest prime (n = 1 or even). A23188

Primes p such that q-p = 36, where q is the next prime after p. A134117

Least prime of three consecutive primes (p1,p2,p3) such that p2-p1 and p3-p2 are both perfect squares. A161002

Primes that remain prime through 4 iterations of function f(x) = 2x + 5. A23304

a(n) = ∑_{i=2^n-1..2ⁿ-1} sigma₀(i), sigma₀(i) number of divisors of n, n positive integer. A153876

Primes P where the distance to the nearest prime is greater than 2·log(P). A330426

Primes that remain prime through 5 iterations of function f(x) = 2x + 5. A23332

Row sums of triangle A134349. A134350

Numbers appearing in A122072 at least four times. A122390

Prime numbers with gaps larger than 18 towards both neighboring primes. A163111